下述影响离合器选型的因素有()
A.整车总质量
B.轮胎大小
C.变速器速比
D.后桥速比
参考答案:A, B, C, D
Read and fill. 根据汉语意思写出英文。
Zip: One, two, three. . . 1 (十 一) lambs.
Zoom: How many horses are there?
Zip: 2 (十二).
Zoom: How many 3____ (绵羊) are there?
Zip: 4____ (十五).
Zoom: How many 5____ (奶牛) are there?
2ip:6 (十三).
Zoom: How many 7____ (山羊) are there?
Zip: 8 (二十一). How many 9 (熊) are there?
Zoom: None.
Zip: No! There is one! You!
在一定条件下,若物体运动的路程s(米)与时间t(秒)的关系式为s=5t2+2t,则当t=4时,该物体所经过的路程为[ ]
A.28米
B.48米
C.68米
D.88米